The absence of a notochord, he says, is one factor that has allowed for the many interpretations of yunnanozoan phylogeny, and therefore he says it was “a little bit of a surprise” to see the fish ...

Yes, according to Osaka Metropolitan University researchers, who found that suppression of Pcdh8 is essential for the notochord to elongate properly in zebrafish. Graduate School of Medicine Dr ...

The coelacanth has gills similar to those of fish living at the depths in which ... In most creatures with backbones, vertebrae replace the notochord in the embryonic stage of development.

This behaviour is thought to help the fish to detect prey using its rostral organ. The coelacanth, however, is marine and its notochord makes it suited to a life where water supports its body. Other ...

In Panderichthids (rhipidistian fish ancestors of amphibians), 2 sets of ossifications ... At anterior end, below the notochord, is the intercentrum. Ichthyostegids (labyrinthodont amphibians) had ...